The standard way to parse JSON in JavaScript is JSON.parse()

The JSON API was introduced with ES5 (2011) and has since been implemented in >99% of browsers by market share, and Node.js. Its usage is simple:

const json = '{ "fruit": "pineapple", "fingers": 10 }';
const obj = JSON.parse(json);
console.log(obj.fruit, obj.fingers);

The only time you won't be able to use JSON.parse() is if you are programming for an ancient browser, such as IE 7 (2006), IE 6 (2001), Firefox 3 (2008), Safari 3.x (2009), etc. Alternatively, you may be in an esoteric JavaScript environment that doesn't include the standard APIs. In these cases, use json2.js, the reference implementation of JSON written by Douglas Crockford, the inventor of JSON. That library will provide an implementation of JSON.parse().

When processing extremely large JSON files, JSON.parse() may choke because of its synchronous nature and design. To resolve this, the JSON website recommends third-party libraries such as Oboe.js and clarinet, which provide streaming JSON parsing.

jQuery once had a $.parseJSON() function, but it was deprecated with jQuery 3.0. In any case, for a long time, it was nothing more than a wrapper around JSON.parse().

This algorithm is pretty straightforward--something like the following should work:

function parse(a) {
  //create object to return
  var ret = {
    columns: [],
    data: []
  };

  //iterate the source array
  a.forEach(function(item, i) {
    if (i === 0) {
      //first time through, build the columns
      for (var key in item) {
        ret.columns.push(key);
      }
    }

    //now build your data item
    ret.data[i] = [];

    //use the column array to guarantee that the order of the fields in the source string doesn't matter
    for (var j = 0; j < ret.columns.length; j++) {
      var key = ret.columns[j];
      ret.data[i].push(item[key]);
    }
  });
  return ret;
}

var j = {
  "d": "[{\"ID\":\"VN00000123\",\"NAME\":\"JOHN GREEN\",\"GENDER\":\"Male\",\"BIRTHDAY\":\"15-10-1987\"},{\"NAME\":\"MERRY BLUE\",\"BIRTHDAY\":\"03-12-1983\",\"ID\":\"VN00000456\",\"GENDER\":\"Female\"},{\"GENDER\":\"Male\",\"ID\":\"VN00000789\",\"NAME\":\"BLACK BROWN\",\"BIRTHDAY\":\"09-07-1990\"}]"
};

//j is an object with one property (d) that is a JSON string that needs parsing
var o = parse(JSON.parse(j.d));
console.log(o);